$parent_id, 'post_type' => 'attachment', 'numberposts' => -1, 'post_status' => null)); foreach ($attachments as $attach) { if ( ($type == 'files' && ! wp_attachment_is_image( $attach->ID )) || ($type == 'images' && wp_attachment_is_image( $attach->ID ))) { if ($unlink) { if (!empty($attach->ID)) { $file = get_attached_file($attach->ID); if (@file_exists($file)) { wp_delete_attachment($attach->ID, TRUE); } } } else { $ids[] = $attach->ID; } } } global $wpdb; if ( ! empty( $ids ) ) { $ids_string = implode( ',', $ids ); // unattach $result = $wpdb->query( "UPDATE $wpdb->posts SET post_parent = 0 WHERE post_type = 'attachment' AND ID IN ( $ids_string )" ); foreach ( $ids as $att_id ) { clean_attachment_cache( $att_id ); } } return $ids; }